Halogen-free flame-retardant resin matrix sandwich structure body and preparation method thereof

A technology of flame retardant resin and resin matrix, applied in the field of halogen-free flame retardant resin matrix sandwich structure and its preparation, to achieve the effects of excellent thermal stability, light weight, and good thermophysical and mechanical properties

Active Publication Date: 2014-04-30
GUANGZHOU KINGFA CARBON FIBER NEW MATERIALS DEV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the defects of halogen-free flame retardancy encountered in the application of carbon fiber composite materials in the existing market in the 3C industry, an object of the present invention is to provide a High capacity, light weight, thin wall, high rigidity halogen-free flame retardant resin matrix sandwich structure

Method used

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  • Halogen-free flame-retardant resin matrix sandwich structure body and preparation method thereof

Examples

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Effect test

Embodiment 1

[0052] The FR100 series PET structural foam (specific gravity of 100kg / m 3 ) cut into 3.0mm thickness and 320mm*250mm surface size (weight is 24g) as a foam with voids, the elastic modulus of the foam is 70MPa according to ASTM D 638 test, and the shear modulus is 35Mpa;

[0053] Cut the thermoplastic resin-based carbon fiber prepreg (CFR-2, Jinfa Carbon Fiber New Material Development Co., Ltd.) into a thickness of 0.25mm and a surface size of 320mm*250mm (each piece weighs 35g) as a resin matrix fiber reinforcement material; laminating a resin matrix fiber reinforcement material on both upper and lower surfaces of the foam to provide a laminate;

[0054] Prepare a steel flat mold with levelness and smoothness ranging from 5 to 13, and the steel flat mold has a concave-convex surface, and the thickness can be controlled from 1 to 10mm. Place the above-mentioned laminate in the rigid flat mold and heat the steel flat mold To 160°C, pressurize and maintain for 10-30s, quickly c...

Embodiment 2

[0057] Rohacell's 71WF type PMI structural foam (specific gravity 70kg / m 3 ) cut into 3.0mm thickness and 320mm*250mm surface size (weight 18g) as a foam with voids, the elastic modulus of the foam is 92Mpa according to ASTM D 638 test, and the shear modulus is 42Mpa;

[0058] Cut the P-N, FD / MFP epoxy resin-based carbon fiber prepreg sheet ((CFR-1), Jinfa Carbon Fiber New Material Development Co., Ltd.) into 0.26mm thickness and 320mm*250mm surface size (each piece weighs 34g ) as the resin matrix fiber reinforcement material; laminating the resin matrix fiber reinforcement material on the upper and lower surfaces of the foam to provide a laminate;

[0059] Prepare a steel flat mold with levelness and smoothness ranging from 5 to 13, and the steel flat mold has a concave-convex surface, and the thickness can be controlled from 1 to 10mm. Place the above-mentioned laminate in the rigid flat mold and heat the steel flat mold to 160°C, pressurize and maintain for 7-10 minutes, ...

Embodiment 3

[0062] A core material made of a modified thermoplastic resin matrix fiber reinforcement material, wherein the thermoplastic resin matrix and long fibers cross to form a void structure through fiber-impregnated resin, and the length of the fiber-impregnated resin is more than 10nm; the core The specific gravity of the material is 1.0, and the thickness is 3.0mm; cut into 3.0mm thickness and 320mm*250mm* (weight is 24g);

[0063] Cut the thermoplastic resin-based carbon fiber prepreg (CFR-2, Jinfa Carbon Fiber New Material Development Co., Ltd.) into a thickness of 0.25mm and a surface size of 320mm*250mm (each piece weighs 35g) as a resin matrix fiber reinforcement material; laminating a resin matrix fiber reinforcement material on upper and lower surfaces of said core material to provide a laminate;

[0064] Prepare a steel flat mold with levelness and smoothness ranging from 5 to 13, and the steel flat mold has a concave-convex surface, and the thickness can be controlled fr...

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Abstract

The invention discloses a halogen-free flame-retardant resin matrix sandwich structure body. The halogen-free flame-retardant resin matrix sandwich structure body is composed of a core material (I) and resin matrix fiber reinforced body materials (II) which are configured on the upper surface and/or the lower surface of the core material (I), wherein the core material (I) is composed of materials with clearances; the core material has the specific gravity of 0.03-2.0, and has the thickness of 0.1-5.0mm, and is composed of a foaming body with clearances or modified thermoplastic resin matrix fiber reinforced materials; a thermoplastic resin matrix and a long fiber form a clearance structure by crossing fiber wet resin. The halogen-free flame-retardant resin matrix sandwich structure body prepared by the invention achieve the flame-retardant level as high as UL94-V0, and is high in weather resistance, high in ultraviolet irradiation resistance, light in weight, thin in thickness, high in rigidity, simple in process, and mainly applied to surface structure plates of the 3C industry, the household appliance industry, relevant crates and the like.

Description

technical field [0001] The invention relates to a halogen-free flame-retardant resin matrix sandwich structure and a preparation method thereof. Background technique [0002] In the general environment of the carbon fiber composite material market, 80% of the resin matrix combined with carbon fiber composite materials is epoxy resin, and the remaining 20% ​​of the resin matrix is ​​phenolic resin, unsaturated resin and some thermoplastic resins. However, compared with epoxy resin, phenolic resin has high hardness and is a brittle material. At the same time, carbon fiber prepreg cannot be prepared by dry method, but can only be prepared by wet method, which has a serious and harsh working environment and environmental protection problems. Compared with epoxy resin, unsaturated resin is much cheaper in cost, but its strength and environmental problems are also poor. At present, it is basically used in the low-cost FRP industry. The combination technology of thermoplastic res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/04B32B27/06B32B27/08B32B27/38B32B27/32B32B37/10B32B37/06C08G59/62C08G59/20
Inventor 陈大华黄险波吴晓军高雄宋威
Owner GUANGZHOU KINGFA CARBON FIBER NEW MATERIALS DEV
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